Determinación de los factores que afectan la aceptación de herramientas de aprendizaje electrónico en la Facultad de Ciencias Económicas de la Universidad Nacional de Colombia Sede Bogotá

Este Trabajo Final de Maestría presenta los resultados de una investigación llevada a cabo en la Facultad de Ciencias Económicas de la Universidad Nacional de Colombia Sede Bogotá, con el objetivo de identificar cuáles son los factores que afectan la aceptación de herramientas de aprendizaje electrónico implementadas como Moodle, Blackboard y Claroline. En la investigación se utilizó el Modelo de Aceptación Tecnológica propuesto por F. Davis en 1989, el cual fue validado mediante análisis de Ecuaciones Estructurales en el software Stata SE. Como principal conclusión se pudo establecer la capacidad aplicativa del modelo en la facultad y la identificación de los factores como Utilidad Percibida e Intención de Uso como principales elementos en el proceso de aceptación de esa tecnología.Abstract This final paper for a Master degree presents the results of a research conducted in the Department of Economic Sciences in the National University of Colombia in Bogotá with the objective of identify the factors that affect the acceptance among students of education technology tools, such as Moodle, Blackboard and Claroline. The Technology Acceptance Model introduced by F. Davis in 1989 was used for the research; it was validated through Structural Equations in the Stata SE software. As main conclusion the application capability of the model was established in the Department of Economic Sciences and factors such as Perceived Utility and Usage Intention were identified as main elements in the acceptance process for technology of this nature.Maestrí

Tool for Measuring the Influence of the Field of Knowledge on Entrepreneurial Intention among University Students

This paper aims to analyze a measurement tool allowing the identification of the differences that may exist between the factors and their relationships that affect the entrepreneurial intention of undergraduate students from related and non-business-related programs. This is to know what elements motivate to create a company for each group, and their degree of association, in order to design more effective educational strategies focused on their motivations. For this, a model was proposed, which was validated through the application of a self-administered questionnaire to undergraduate students of different careers, in Instituto Tecnológico Metropolitano (Medellín). It was found that personal attitudes have a stronger relationship with entrepreneurial intention in students of business-related programs, while perceived viability, perceived convenience, and entrepreneurial behavior have greater weight in students from non-affiliated programs. Thus, the courses focused on creativity in the first group, and the courses focused on the know-how in the second group would be more efficient in increasing the entrepreneurial intention

On the variety of two dimensional real associative algebras

This paper consists of a description of the variety of two dimensional associative algebras within the framework of Nonstandard Analysis. By decomposing each algebra in A2 as sum of a Jordan algebra and a Lie algebra, we calculate th isomorphism classes of two dimensional associative algebras over the eld of real numbers and determine the open components and the contractions of the variety

Modelos de gestión del conocimiento como herramientas de eficiencia en procesos organizacionales

La gestión del conocimiento se ha convertido en una herramienta para procurar procesos duraderos y eficientes dentro de las organizaciones y garantizar que el conocimiento trascienda entre empleados y áreas de la empresa, a partir del uso adecuado de herramientas que les permita hacer una adecuada gestión del conocimiento. En ese sentido, el objetivo de este artículo es examinar herramientas, modelos y metodologías de gestión del conocimiento que puedan ser replicadas en algunas organizaciones, con especial énfasis las de tipo servicios. La metodología utilizada fue una revisión de literatura mediante la recolección de documentos en la base de datos SCOPUS, a partir de una ecuación de búsqueda que arrojó como resultado final 65 textos. Dentro de los resultados encontrados se analizaron 10 modelos de gestión del conocimiento, identificándose cómo la gestión del conocimiento, más que una herramienta tecnológica, busca la administración coherente de personas, cultura, buenas prácticas y estructura organizacional. Se logró identificar la importancia que representa el capital humano en estos procesos y prácticas, y la necesidad de plantear un modelo interactivo que busque la integralidad de los datos y mayor participación con el cliente

Caracterización de la intención emprendedora en estudiantes universitarios a partir del Modelo de Intención Emprendedora Sistémico: caso de estudio

[EN] This paper presents a characterization of the entrepreneurial intention of university students in the city of Medellin. It is based on a quantitative methodological design from a self-administered questionnaire that was applied and validated to 879 students. This questionnaire collected data about the main factors reported in the Systemic Entrepreneurship Intention Model. Factors or components that describe behavior patterns when undertaking a new company were identified through a principal component and cluster analysis. The results identify two factors that explain most of the data variance: the first one is the perceived viability by students to carry out processes of new companies, and the second one is the convenience factor that brings the creation a company. Furthermore, three groups or clusters of students with common characteristics in their entrepreneurial intention were identified. First, the “entrepreneurs” are characterized by having a positive attitude and aptitude regarding entrepreneurship. The second group is “neutral” and they are subjects partially affected or indifferent about wanting to start a new company. Finally, the group of “non-entrepreneurs” is composed of individuals who showed behavior of apathy towards entrepreneurship.[ES] Este artículo muestra una caracterización de la intención emprendedora de estudiantes universitarios de la ciudad de Medellín. Este estudio parte de un diseño metodológico cuantitativo a partir de un cuestionario autoadministrado aplicado y validado a 879 estudiantes, en el cual se recolectó información sobre los principales factores reportados en el Modelo de Intención Emprendedora Sistémico. Mediante un análisis de componentes principales y de clúster se lograron identificar los factores o componentes que describen los patrones de comportamiento en cuanto a emprender una empresa. Los resultados obtenidos identifican dos factores que explican la mayor parte de la varianza de los datos, el primero es la viabilidad percibida por los estudiantes para llevar a cabo procesos de emprendimiento y el segundo factor es la conveniencia que le reporta el crear una empresa. De otro lado, se lograron identificar tres grupos o clúster de estudiantes con características comunes y disímiles en su intención de emprender, el primero, los “emprendedores”, que se caracterizan por poseer una actitud y aptitud positiva frente al tema; el segundo grupo el “neutro” el cual está parcialmente afectado o indiferente en cuanto a querer emprender una nueva empresa y el último los “no emprendedores”, los cuales presentaron un comportamiento de apatía frente al tema

Measurement of the top quark forward-backward production asymmetry and the anomalous chromoelectric and chromomagnetic moments in pp collisions at √s = 13 TeV

Abstract The parton-level top quark (t) forward-backward asymmetry and the anomalous chromoelectric (d̂ t) and chromomagnetic (μ̂ t) moments have been measured using LHC pp collisions at a center-of-mass energy of 13 TeV, collected in the CMS detector in a data sample corresponding to an integrated luminosity of 35.9 fb−1. The linearized variable AFB(1) is used to approximate the asymmetry. Candidate t t ¯ events decaying to a muon or electron and jets in final states with low and high Lorentz boosts are selected and reconstructed using a fit of the kinematic distributions of the decay products to those expected for t t ¯ final states. The values found for the parameters are AFB(1)=0.048−0.087+0.095(stat)−0.029+0.020(syst),μ̂t=−0.024−0.009+0.013(stat)−0.011+0.016(syst), and a limit is placed on the magnitude of | d̂ t| < 0.03 at 95% confidence level. [Figure not available: see fulltext.

Measurement of b jet shapes in proton-proton collisions at root s=5.02 TeV

We present the first study of charged-hadron production associated with jets originating from b quarks in proton-proton collisions at a center-of-mass energy of 5.02 TeV. The data sample used in this study was collected with the CMS detector at the CERN LHC and corresponds to an integrated luminosity of 27.4 pb(-1). To characterize the jet substructure, the differential jet shapes, defined as the normalized transverse momentum distribution of charged hadrons as a function of angular distance from the jet axis, are measured for b jets. In addition to the jet shapes, the per-jet yields of charged particles associated with b jets are also quantified, again as a function of the angular distance with respect to the jet axis. Extracted jet shape and particle yield distributions for b jets are compared with results for inclusive jets, as well as with the predictions from the pythia and herwig++ event generators.Peer reviewe

Search for Physics beyond the Standard Model in Events with Overlapping Photons and Jets

Results are reported from a search for new particles that decay into a photon and two gluons, in events with jets. Novel jet substructure techniques are developed that allow photons to be identified in an environment densely populated with hadrons. The analyzed proton-proton collision data were collected by the CMS experiment at the LHC, in 2016 at root s = 13 TeV, and correspond to an integrated luminosity of 35.9 fb(-1). The spectra of total transverse hadronic energy of candidate events are examined for deviations from the standard model predictions. No statistically significant excess is observed over the expected background. The first cross section limits on new physics processes resulting in such events are set. The results are interpreted as upper limits on the rate of gluino pair production, utilizing a simplified stealth supersymmetry model. The excluded gluino masses extend up to 1.7 TeV, for a neutralino mass of 200 GeV and exceed previous mass constraints set by analyses targeting events with isolated photons.Peer reviewe

Measurement of t(t)over-bar normalised multi-differential cross sections in pp collisions at root s=13 TeV, and simultaneous determination of the strong coupling strength, top quark pole mass, and parton distribution functions

Peer reviewe

Measurement of the azimuthal anisotropy of Y(1S) and Y(2S) mesons in PbPb collisions at root s(NN)=5.02 TeV

The second-order Fourier coefficients (v(2)) characterizing the azimuthal distributions of Y(1S) and Y(2S) mesons produced in PbPb collisions at root s(NN) = 5.02 TeV are studied. The Y mesons are reconstructed in their dimuon decay channel, as measured by the CMS detector. The collected data set corresponds to an integrated luminosity of 1.7 nb(-1). The scalar product method is used to extract the v2 coefficients of the azimuthal distributions. Results are reported for the rapidity range vertical bar y vertical bar < 2.4, in the transverse momentum interval 0 < pT < 50 GeV/c, and in three centrality ranges of 10-30%, 30-50% and 50-90%. In contrast to the J/psi mesons, the measured v(2) values for the Y mesons are found to be consistent with zero. (C) 2021 The Author(s). Published by Elsevier B.V.Peer reviewe